Form 924 (05.18) ©SOR Inc.
7/16
SOR RF Probe Grounding Scheme
SOR RF Probe Grounding Scheme
Critical Grounding Path =
Circuit
Board
Line
Neutral
Ground
Electronics
Housing
Power Supply
Line
Neutral
Ground
Process
Connection
SOR Supplied
Stilling Well
(optional)
Probe Center
Conductive Element
IMPORTANT! Do not
provide separate earth
grounding for the process
connection. This can create
a parallel grounding circuit
that will impair operation
and calibration.
Green LVL LED
Alarm Relay Terminal Blocks
Failsafe Switch
Level Relay Terminal Blocks
Line Power Terminal Block
Red LED
Yellow LED
Adjustable Differntial Adjustments
(Function only on units
with AD accessory)
Remote Probe Terminal Block
(Remote units only)
Do not provide separate earth grounding
for the process connection. This can
create a parallel grounding circuit
that will impair operation and calibration.
